阳离子型可聚合咪唑类离子液体-丙烯酰胺共聚物的制备及其对盐酸腐蚀碳钢缓蚀行为

发布时间：2018-01-16 02:01

  本文关键词：阳离子型可聚合咪唑类离子液体-丙烯酰胺共聚物的制备及其对盐酸腐蚀碳钢缓蚀行为　出处：《应用化学》2017年08期 　论文类型：期刊论文

  更多相关文章： 阳离子型可聚合咪唑类离子液体 离子液体-丙烯酰胺共聚物 阳离子度 缓蚀剂 缓蚀机理

【摘要】：利用阳离子型可聚合离子液体1-丙烯酰氧乙基-3-甲基咪唑四氟硼酸盐与丙烯酰胺的反相微乳液共聚合,制备了阳离子型咪唑类离子液体-丙烯酰胺共聚物缓蚀剂,并探讨了其缓蚀性能。研究了不同阳离子度、不同浓度聚合物溶液的缓蚀性能以及吸附时间对盐酸腐蚀碳钢速率的影响,并初步讨论了缓蚀机理。研究表明,该种阳离子型缓蚀剂的缓蚀效率可达90%以上;缓蚀剂的缓蚀能力不仅取决于缓蚀剂的阳离子度,还取决于该种缓蚀剂的相对分子质量;缓蚀效率并非简单地随聚合物浓度的增加而提高,当聚合物溶液的浓度过高时,反而会使缓蚀效率下降;随吸附时间的延长,碳钢的腐蚀速率逐渐降低,约40 h后基本保持不变;加入缓蚀剂有效抑制了酸对铁的腐蚀,随缓蚀效率的提高,碳钢表面的粗糙程度明显降低,孔洞结构减少。
[Abstract]:Inverse microemulsion copolymerization of acrylamide with cationic polymerizable ionic liquid 1-acryloxy ethyl -3-methyl imidazolium tetrafluoroborate was studied. Cationic imidazole ionic liquid-acrylamide copolymer corrosion inhibitor was prepared and its corrosion inhibition performance was discussed. The corrosion inhibition performance of polymer solution with different concentration and the effect of adsorption time on the corrosion rate of carbon steel by hydrochloric acid were discussed. The inhibition efficiency of this kind of cationic corrosion inhibitor is more than 90%. The inhibition ability of the inhibitor depends not only on the cationic degree of the inhibitor, but also on the relative molecular weight of the inhibitor. The corrosion inhibition efficiency is not simply increased with the increase of polymer concentration. When the concentration of polymer solution is too high, the corrosion inhibition efficiency will decrease. With the increase of adsorption time, the corrosion rate of carbon steel decreases gradually and remains unchanged after about 40 h. The addition of corrosion inhibitor can effectively inhibit the corrosion of iron by acid. With the increase of corrosion inhibition efficiency, the surface roughness of carbon steel is obviously reduced and the pore structure is reduced.
【作者单位】： 北京师范大学化学学院环境友好与功能高分子材料北京师范大学重点实验室;能量存储与转化北京市重点实验室;
【基金】：长江学者与创新团队发展计划及能量转换与存储材料北京市重点实验室开放基金资助~~
【分类号】：TG174.42
【正文快照】： 缓蚀剂在防腐技术中的应用日益广泛。按电化学机理可将缓蚀剂分为阳离子型缓蚀剂、阴离子型缓蚀剂和混合型缓蚀剂三类。缓蚀剂通过物理或化学过程吸附在金属表面;任何吸附过程主要依赖于缓蚀剂的物理/化学性质,如官能团、受体原子的电子密度和分子结构等[1-3]。包含氮、氧、磷，

本文编号：1431026